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Terrible scaling with 6950CF - Page 5

post #41 of 53
He's probably just emotional and doesn't fully understand the issue with his system.

Give it some time, he will come to you when he needs more performance.
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post #42 of 53
Quote:
Originally Posted by PriestOfSin View Post
A friend of mine recently purchased two Sapphire HD6950 1GB cards, and the scaling is AWFUL. For one example, at 1680x1050, Enthusiast settings, 2x AA, he only gets 35 fps average in Crysis Warhead O_o

His system specs are:

CPU: AMD Phenom II X6 1055T @ 3.5GHz
RAM: 8GB DDR3-1600 Corsair Vengeance
mobo: MSI 890GXM-G65
PSU: Corsair 850HX
Case: CM HAF922 (so airflow's not the problem)

the games we've tested are (all settings maxed, AA @ 2x whenever possible, resolution @ 1680x1050)

Section 8: Prejudice- 46 fps average
AVP: 55 fps average
Crysis: Warhead- 35 fps average
Crysis- 32 fps average
Metro 2033- 22 fps average
Just Cause 2- 37 fps average

What the heck is going on? We installed MSI Afterburner and his GPU usage usually sits around 30-40%, even when the system is struggling. He's running the latest drivers with the latest crossfire patch, so I'm out of ideas.
His resolution is forcing his CPU to do more work rather than the GPU's. Tell him to try a 1080p screen if possible and recheck the frame rates. I've seen this countless times. People say this can't happen but it really can. I too have experienced this. It's more of a resolution bottleneck than CPU bottleneck. (Based on the CPU not being a bottleneck)
Edited by BradleyW - 5/10/11 at 3:14pm
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post #43 of 53
Quote:
Originally Posted by Goaky View Post
Really surprising if it is in fact the CPU holding the cards back. Judging by the numbers in the OP, my single 5870 w/ SB does better than his two cards with the x6. :O
^this

My pii 955 with a single 6950 does better... Something has to be going on with his system.
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post #44 of 53
Quote:
Originally Posted by PriestOfSin View Post
He's my friend in the capacity that we have similar interests, and he's enjoyable to be around 2% of the time. In any case, I've given up. Now my goal is to somehow get his GPUs into my system for the express purpose of rubbing it in his face. I could buy two 6950s...
This sounds like a good plan !
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post #45 of 53
Quote:
Originally Posted by BradleyW View Post
His resolution is forcing his CPU to do more work rather than the GPU's. Tell him to try a 1080p screen if possible and recheck the frame rates.
Wouldn't 1080p be a higher resolution, forcing the CPU to work even harder? (1920×1080)
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post #46 of 53
Quote:
Originally Posted by svthomas View Post
Wouldn't 1080p be a higher resolution, forcing the CPU to work even harder? (1920×1080)
Oops scratch that, if the resolution was higher it would make the cards work harder/slower, and send the cpu data slower. Correct?
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post #47 of 53
Quote:
Originally Posted by svthomas View Post
Wouldn't 1080p be a higher resolution, forcing the CPU to work even harder? (1920×1080)
Higher resolution makes the gpu work harder. It won't make the fps go up, but it will just make the gpu work harder .

In theory if the cpu is the bottleneck the fps would stay the same when increasing the resolution or detail level. Frames per second are bound to drop at least a little, but this would essentially tell you if it was in fact a cpu bottleneck.

My sig rig plays all the games I play pretty much perfectly fine maxed out so I'm not buying into the cpu bottleneck. It wouldn't be that much of a bottleneck.
Edited by rquinn19 - 5/10/11 at 3:21pm
post #48 of 53
K Ill make my point once more
At the min Im running at stock so my CPU is at a lower clock 3.2 to his 3.5
I have stock everything even down to the NB at the sec, I need to alter a few things to get back to 3000.
Im running a pair of CFX 6870's, worse cards than him.
Other specs are nearly the same only I'm running a higher res.
I can nigh on double, and in some cases triple the FPS he was getting and I am geting bottlenecked by my CPU, but its pretty damn obvious hes got something wrong somewhere other than a bottleneck. If my "poorer" system is knocking out at least twice the frames on average bar one game I think.
    
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post #49 of 53
Quote:
Originally Posted by rquinn19 View Post
Higher resolution makes the gpu work harder. It won't make the fps go up, but it will just make the gpu work harder .

In theory if the cpu is the bottleneck the fps would stay the same when increasing the resolution or detail level. Frames per second are bound to drop at least a little, but this would essentially tell you if it was in fact a cpu bottleneck.

My sig rig plays all the games I play pretty much perfectly fine maxed out so I'm not buying into the cpu bottleneck. It wouldn't be that much of a bottleneck.
Thanks.
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post #50 of 53
Thread Starter 
Priest.-FTX-.: I'm telling you, 4GHz is kinda essential for a multi-GPU setup with that processor, at least from what i've read.
name removed: Na, I think 3.5ghz is good enough
name removed: I can't affored a new cpu if I mess up
name removed: I'm actually thinking of downclocking back to 2.8Ghz. the weather is starting to warm up
Priest.-FTX-.: clocking it DOWN?
Priest.-FTX-.: I guess it's all just my opinion, but why on earth would you clock it down?
Priest.-FTX-.: your two cards are already doing terribly, you should be getting nearly triple the FPS you're getting now.
name removed: Triple?
name removed: HAHAHAHA
name removed: In what game?
Priest.-FTX-.: in most of the heavier hitting ones, anyway.
name removed: BBC2 is ruunning like what its supposed framerate is
name removed: So was Just cause 2
Priest.-FTX-.: so how do you explain the piss-poor performance in Crysis?
name removed: That's drivers dude, you can blame ATI drivers on that one
name removed: Or
name removed: The cards really arent that impressive
Priest.-FTX-.: I'll bet if we put them in my system, they'd really fly. Would that convince you of a CPU bottleneck? Of the need to OC your CPU?
name removed: We already did
Priest.-FTX-.: no we didn't
Priest.-FTX-.: they've never been in my system
name removed: No
name removed: I meant OC my processor
name removed: Its not going to -censored- matter
name removed: I went from 60fps in BBC2 to 83 fps - 134fps. That's not a -censored- gain?
Priest.-FTX-.: your cards should be doing better.
name removed: Not from what I have read
name removed: There doing excatly as they should do. its finding the right driver set
name removed: As soon as you apply the catayst application profiles they work liike they should.
name removed: If you want to put them in your system. I'll give you the chance, I just think there's really not much we can do. I would have to upgrade... LEAVE IT THE -censored- BE!
Priest.-FTX-.: 6950 crossfire is supposed to get nearly 60 FPS average, in Crysis, Very High Details, at 1920x1080.
Priest.-FTX-.: http://www.tomshardware.co.uk/crossf...w-32141-5.html
Priest.-FTX-.: this review right here. I'm not saying you actually will reach that, but I'm saying you should be able to get close at least.
Priest.-FTX-.: but, this is the last time I mention it. You arent' concerned, so neither am I.
name removed: I dont care about Crysis, its pile of -censored-
name removed: Just because your stupid ass benchmarks says I 40 (EDITOR'S NOTE: no idea why he stopped there...)
name removed: As I said, the decideing facotr is next week. If the Witcher 2 doesnt run like I WANT IT TO. Then I'm gointg to sell the cardss. It was a complete waste to upgrade to a second card anyway
Priest.-FTX-.: Exactly, I was trying to help... make it LESS of a waste of money.
name removed: -censored- YOU AND -censored- YOUR HELP, I DONT NEED IT, MY SYSTEM IS BETTER THAN YOURS, AND IT ALWAYS WILL BE. YOU HAVE A -censored- QUAD CORE, I HAVE SIX. I'M BETTER.
Priest.-FTX-.: Ok, captain superior, explain how my SINGLE 5870 is almost outperforming your dual card setup? Your fps should be WAY higher than mine. And my single 470? It's almost beating you too...
Priest.-FTX-.: Stop acting like a five year old, and realize that perhaps your system will require some tweaking to get the performance you PAID for.
Priest.-FTX-.: Otherwise, stop coming to me for advice if you aren't going to take it.
name removed: -censored- YOU.
Priest.-FTX-.: I forget, does all caps mean you're yelling? You use it so often, I can't really tell.
name removed is offline.

I hereby nominate my friend for "Jackass of the year".
My Rig
(12 items)
 
Wife's Rig
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Ryzen 1700 @ 3.8 1.3v Asrock X370 Taichi EVGA GTX1080Ti SC Black 16GB G.Skill DDR4-3200 CL 14 
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480GB PNY SSD 500GB Samsung 960 EVO M.2 SSD 3TB Seagate Barracuda 7,200RPM 240GB Kingston SSD 
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My Rig
(12 items)
 
Wife's Rig
(10 items)
 
 
CPUMotherboardGraphicsRAM
Ryzen 1700 @ 3.8 1.3v Asrock X370 Taichi EVGA GTX1080Ti SC Black 16GB G.Skill DDR4-3200 CL 14 
Hard DriveHard DriveHard DriveHard Drive
480GB PNY SSD 500GB Samsung 960 EVO M.2 SSD 3TB Seagate Barracuda 7,200RPM 240GB Kingston SSD 
CoolingOSPowerCase
Cryorig H5 Universal Windows 10 Home 64-bit Seasonic 750W 80+ Gold Phanteks Eclipse P400 
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